This system is used in glass shop for checking straightness and flatness, Checking square and V blocks, checking deflection of a structure under load Measuring tapers, checking the angles of small castings. Checking the cutting angle of tools, setting angles of jigs and machine tool heads. Dark field graticules is used to get good image from un silvered glass surface or surfaces having poor reflection. Eye piece have a long eye relief, important for spectacle user. Direct reading to one minute of arc. Total measuring range of 60 minutes for measurements in both axis simultaneously. Anti- fungus coating is done on optics. Specifications | Objective focal length | 300 mm | | Objective clear aperture | 25 mm | | Barrel diameter | 38 mm | | Barrel length | 200mm | | Eye piece magnification | 10x | | Measuring range | 25' | | Read out | On direct graticule at 1' | | Telescope length | 380mm | | Illuminating bulb rating | 6 v 10 watts comes with transformer. | | Dimension of base | Solid rugged cast iron base 75 x 250mm | | Flatness of base | As per ISI standard i.e. 6-7 microns within 50mm any where of the entire surface |
Reflecting mirror:
Material : optical glass bsc/bk-7 front-surface coated mirror Diameter : 40 mm, rollers with c.d of 50mm.Optical square 20 x 20mm opening. Bottom and sides are optically lapped.Mirror is mounted on the base at 90° ± 2'. |
